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logger.js
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'use strict';
const config = require('wild-config');
const log = require('npmlog');
let syslog;
try {
// might not be installed
syslog = require('modern-syslog'); // eslint-disable-line global-require
} catch (E) {
// just ignore
}
if (config.log.syslog && syslog) {
syslog.open(config.ident, syslog.option.LOG_PID, syslog.level.LOG_INFO);
let logger = data => {
data.messageRaw[0] = '(' + data.prefix + ') ' + data.messageRaw[0];
return data.messageRaw;
};
switch (log.level) {
/* eslint-disable no-fallthrough */
case 'silly':
log.on('log.silly', data => syslog.debug(...logger(data)));
case 'verbose':
log.on('log.verbose', data => syslog.info(...logger(data)));
case 'info':
log.on('log.info', data => syslog.notice(...logger(data)));
case 'http':
log.on('log.http', data => syslog.note(...logger(data)));
case 'warn':
log.on('log.warn', data => syslog.warn(...logger(data)));
case 'error':
log.on('log.error', data => syslog.error(...logger(data)));
/* eslint-enable no-fallthrough */
}
log.level = 'silent'; // disable normal log stream
}